INPUT AVAILABLITY

We are West Bengal based partnership comapny. we work on a project in jharkhand. we purchase some goods from there for project. we have no Jharkhand based  Gst no. we get invoice against our Gst no (WB based). but supplier show in GSTR-01 , CGST/SGST instead of IGST. In GSTR-2b , show we cant take those input . 
what is the next step to get Input ?\

pls help.... 

Thanks In Advance....